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class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/hanmuyibiao/637449414062166967/9289784.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gaz9pmo" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/hanmuyibiao/637449414062166967/9289784.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="rl7c7ki" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>上海316L隔膜壓力表讀數(shù),隔膜壓力表</p><p><span>***更新：</span>2021-01-23 10:25:48</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="3qixoqx" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">漢木（上海）儀表科技有限公司</a></p><p><span>聯(lián)系人：</span>徐華</p><p><span>郵箱: </span>532478234@qq.com</p><p><span>電話: </span>13661851014</p><p><span>傳真: </span>021_66782218</p><p><span>網(wǎng)址: </span>http://www.han-mu.com</p><p><span>手機: </span>021-66782218</p><p><span>地址: </span>上海市寶山區(qū)毛家路125弄79號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="nsuy8bi" class="page-proshow02"><p class="title">詳細說明</p><div id="s3hjdpb" class="box"><p><p> R134a氣化潛熱大、比定壓熱容大、具有較好制冷能力；飽和氣體積大，相同排氣量壓縮機的制冷劑的質(zhì)量流量小，ODP臭氧層沒有破壞作用，但是R134a的GWP全球變暖潛能值為1600。R134a的容量比R22小，壓力比R22低。R134a的吸水性很強，是R22的20倍，因此對機組系統(tǒng)中干燥器的要求更高，以避免發(fā)生冰堵現(xiàn)象。R134a系統(tǒng)需要**的壓縮機及**的脂類潤滑油，脂類潤滑油由于具有高吸水性、高起泡性及高擴散性，在系統(tǒng)性能的穩(wěn)定性上劣于R22系統(tǒng)所使用的礦物油。R134a制冷劑的溫度壓力對照表6R404a制冷劑：制冷劑R404a是一種混合制冷劑，它由44%的R125、4%的R134A、52%的R143A組成。兩種制冷劑不能混用，R22是一次冷媒，上海316L隔膜壓力表讀數(shù)，R404a是混合二次冷媒，上海316L隔膜壓力表讀數(shù)，共沸與非共沸，沸點壓力不同。制冷劑的ODP為0，GWP為4540。R404A制冷劑的排氣壓力約為R22的，質(zhì)量流量是R22的，上海316L隔膜壓力表讀數(shù)，排氣流速增加，阻力增大。一般來講，冷凝器的換熱容量要比R22增大20％～30％。R404A是非共沸混合工質(zhì)，非共沸混合物的成分濃度隨溫度、壓力變化而變化，這對制冷系統(tǒng)的生產(chǎn)、調(diào)試及維修都帶來一定的困難，對系統(tǒng)熱傳導(dǎo)性能也會產(chǎn)生一定的影響，特別是當制冷劑泄漏時，系統(tǒng)制冷劑建議全部排空置換，這樣才能保證各混合組分的比例。Ham上海震揚光電壓力表有哪些型號。上海316L隔膜壓力表讀數(shù)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海316L隔膜壓力表讀數(shù),隔膜壓力表" src="https://tyunfile.71360.com/WaterMark/UploadFile/hanmuyibiao/637449414062166967/9289784.png"></div><p> 會造成接觸不良而導(dǎo)致缺相燒機。其接線線路上必須要用過載保護裝置，并根據(jù)電機銘牌上的電流要求調(diào)整保護裝置的設(shè)定值的大??；4、按轉(zhuǎn)方法：立泵；5、吸入水位高于泵上：可單泵和雙泵串聯(lián)或并聯(lián)使用；6、吸入水位低于泵下：如水池抽送水；7、臥泵直接接管安裝。泵的啟動：1、泵在起動前應(yīng)打開進水閘閥和泵排氣閥塞，關(guān)閉出口閘閥。泵腔內(nèi)灌滿水，使泵能夠正常啟動：2、點動電機，從電機端看，檢查轉(zhuǎn)向是否符合箭頭所示方向。泵的運行：1、泵起動后逐漸打開出口閘閥，調(diào)整至所需工況點；2、泵在運行過程中，運行工況點流量易不大于性能參表中所給的大流量點的流量為宜，同時電機運行時電流不得超出額定電流；3、停機順序：關(guān)閉出口管路上的閘閥—電機—壓力表。泵的維護：1、應(yīng)經(jīng)常檢查泵在運行過程中是否平穩(wěn)。有無機械密封磨損及泄漏情況，及時更換密封件，防止壓力水進入電機；2、經(jīng)常檢查電機外殼的溫度變化，其**高溫度應(yīng)不超過85攝氏度，如發(fā)現(xiàn)溫度過高，應(yīng)立即停機檢查；3、泵長時間停用時，應(yīng)排凈積水，去除銹垢，涂上防銹油脂，以便下次再用。工作原理：隔膜泵靠壓縮空氣驅(qū)動。定向空氣分配閥和導(dǎo)向閥，稱為：“氣室”，都設(shè)置在泵的中心部位。上海316L隔膜壓力表讀數(shù)隔膜壓力表的安裝和使用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海316L隔膜壓力表讀數(shù),隔膜壓力表" src="https://tyunfile.71360.com/WaterMark/UploadFile/hanmuyibiao/637450227473026294/7777655.png"></div><p> 電接點壓力表工作原理電接點壓力表是在普通壓力表的基礎(chǔ)上加裝電氣裝置，在設(shè)備達到設(shè)定壓力時，現(xiàn)場指示工作壓力并輸出開關(guān)量信號的儀表。電接點壓力表的指針和設(shè)定針上分別裝有觸點，使用時首先將上限和下限設(shè)定針調(diào)節(jié)至要求的壓力點。當壓力變化時，指示壓力指針達到上限或者下限設(shè)定針時，指針上的觸點與上限或者下限設(shè)定針上的觸點相接觸，通過電氣線路發(fā)出開關(guān)量信號給其他工控設(shè)備，實現(xiàn)自動控制或者報警的目的。目前國內(nèi)電接點壓力表輸出接點信號的形式有：1）一個高位，一個低位開關(guān)量輸出；2）兩個高位開關(guān)量輸出；3）兩個低位開關(guān)量輸出；4）兩個低位，兩個高位開關(guān)量輸出；電接點壓力表控制水泵電接點壓力表是在普通壓力表基礎(chǔ)上加裝電器裝置，在設(shè)備達到設(shè)定壓力時，現(xiàn)場指示工作壓力并輸出開關(guān)量信號的特殊壓力表。一般常用的電接點壓力表有3個指針，一個是壓力實時指針，另外兩個是開關(guān)量的輸出指針。一個壓力下限指針，這個壓力下限就是電機啟動，補充管道壓力的設(shè)定值，一個壓力上限，這個壓力上限就是電機停止，保持管道壓力的設(shè)定值。系統(tǒng)設(shè)置的時候，設(shè)定好壓力上下限就能夠?qū)崿F(xiàn)恒壓供水，電接點壓力表不需要配備變頻器，直接配備啟動，保持。</p><p> 以避免損壞閥球。如在拆卸過程中損壞了閥球和(或)閥座，必須更換它們。為避免損壞，如有壓縮空氣，在閥座(420)的相對一端用壓縮空氣拆卸閥球，閥座。6.從閥體和閥座上小心地取下兩個或三個O形圈（取決于泵頭形式）。7.認真清洗要重新使用的所有部件。如在清洗過程中使用了化學(xué)試劑，應(yīng)確信其與輸送的液體相兼容。GB0080~GB1500液力端塑料單向閥重新裝配1.在閥體和閥座上將新的O形圈安裝到位。注意：每次拆卸單向閥時，應(yīng)使用新的O形圈，以確保密封，不滲漏的狀態(tài)。2.從閥體端部將閥球放入閥體的弧形內(nèi)腔。3.將閥體置于平面上，有閥球的一側(cè)向上，將閥座置于閥體上，把閥球封閉在里面。當閥座按進閥球?qū)蜷y體時，閥座的斜邊必須在表面上，斜面不應(yīng)面向單向閥的內(nèi)側(cè)。用一塊平板，用平穩(wěn)和均勻的壓力將閥座按進閥球?qū)蜷y體中。注意：如閥座安裝不正確，閥球?qū)⒉粫a(chǎn)生緊密的密封，造成輸液性能不佳。4.將活接螺母置于閥體的正確端部。通過確定單向閥用于泵頭的吸口或出口，就可確定正確的端部。在接頭端部蓋上接頭壓蓋，并用手將其擰緊。警告：吸入和排出單向閥的組裝順序是不同的，參照圖9~16可得到正確的組裝順序。如單向閥安裝不正確，就會出現(xiàn)下列現(xiàn)象：。上海震揚光電材料科技有限公司和漢木（上海）儀表科技有限公司的關(guān)系。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海316L隔膜壓力表讀數(shù),隔膜壓力表" src="https://tyunfile.71360.com/WaterMark/UploadFile/hanmuyibiao/637450228045389648/1198949.png"></div><p> 阻力大●盡量減少出口管路長度及彎頭數(shù)量。2、輸送的物料太粘稠●檢查物料進料口出有沒有堵塞?！袢缥锪险吵肀M量縮短進料口管路長度。4、出料口關(guān)閉后泵還繼續(xù)工作1、料還有出路2、出料口閥不嚴密●關(guān)實出料口閥3、閥球和閥座間密封不嚴，可能有雜物卡住。●清楚閥球閥座間雜物5、泵不工作1、氣源太臟，導(dǎo)致氣閥內(nèi)磨損嚴重?！裉?**源，更換氣閥內(nèi)密封件。2、膜片損壞或膜片壓板松動漏氣，物料從消聲器排出、●更換膜片、上緊膜片壓板。3、泵腔內(nèi)物料干結(jié)●打開泵腔清理4、膜片連桿O型圈或U型杯磨損嚴重●更換膜片連桿O型圈或U型杯5、導(dǎo)向組件或?qū)騉型圈磨損嚴重●更換導(dǎo)向組件或?qū)騉型圈6、氣閥內(nèi)的滑閥裝反●把滑閥正確裝入7、泵出口背壓過大●減小出口背壓或調(diào)大進氣壓力（在隔膜泵能承受的壓力范圍內(nèi)）6、泵工作但無物料打出，或有物料打出但壓力低流量小1、進料口或進料管道密封不嚴●檢查進料口或進料管道是否密封嚴實2、閥球閥座磨損導(dǎo)致密封不嚴●打開上下歧管檢查閥球閥座球座間縫隙較大的更換新的閥球閥座3、物料粘度過高，閥球閥座不能及時密封到位●更換合適的閥球閥座7、漿體固含量較高時，停泵后有大量固體殘留1、如果現(xiàn)場輸送的是沉淀料。隔膜壓力表的工作原理。安徽高精度隔膜壓力表的量程</p><p style="text-indent:25px">衛(wèi)生型隔膜壓力表的使用場景。上海316L隔膜壓力表讀數(shù)</p><p> **小工作壓力應(yīng)不低于量程的1/3。按以上原則，根據(jù)被測**大壓力算出一個數(shù)值后，從壓力表量程系列中選取稍大于該值的數(shù)值即為所選量程。3、壓力表種類的選擇測量不同介質(zhì)和使用環(huán)境要選用不同種類壓力表（1）一般介質(zhì)，如空氣、水、蒸汽、油等，可用普通壓力表。（2）對于特殊介質(zhì)需用**壓力表，如氨類用氨用壓力表；氧氣類用氧用壓力表；氫氣類用壓力表；乙炔類用乙炔壓力表等等。（3）對于一般性腐蝕介質(zhì)，及有腐蝕性氣體環(huán)境，可選用不銹鋼型壓力表。（4）對于測量粘度大，易結(jié)晶、腐蝕性大、溫度較高的液體、氣體或有固體浮游物的介質(zhì)壓力測量，選用隔膜式壓力表。（5）對于脈沖性介質(zhì)及機械振動場合的壓力測量。選用耐震型壓力表。（6）有遠傳要求時可選用遠傳型壓力表，遠傳信號有電流型和電阻型及電壓型。（7）有控制保護要求時可選用電接點壓力表。（8）有防爆要求時必須選用防爆型，如防爆電接點壓力表。壓力表的精度等級是以它的允許誤差占表盤刻度值的百分數(shù)來劃分的，其精度等級數(shù)越大允許誤差占表盤刻度極限值越大。壓力表的量程越大，同樣精度等級的壓力表，它測得壓力值的***值允許誤差越大。工業(yè)中的使用：經(jīng)常使用的壓力表的精度為、級，如果是。上海316L隔膜壓力表讀數(shù)</p><p style="text-indent:25px">漢木（上海）儀表科技有限公司主要經(jīng)營范圍是儀器儀表，擁有一支專業(yè)技術(shù)團隊和良好的市場口碑。漢木儀表致力于為客戶提供良好的壓力表，數(shù)字式壓力表，不銹鋼耐震壓力表，溫度表熱電偶，一切以用戶需求為中心，深受廣大客戶的歡迎。公司秉持誠信為本的經(jīng)營理念，在儀器儀表深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點，發(fā)揮人才優(yōu)勢，打造儀器儀表良好品牌。漢木儀表憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來的聲譽和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: 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